Joseph c



Apr. 10, 1923'; g- Re. 15,574 J. c. DUNHAM, 5

2 Fig. 2, but

'' spring quality.

Reiasued r, 10, i923.

UNITED ST S PATENT ornca.

,rosn'rn c. nummm, or oirLAHomA, oxnanoma.

-WEATHER s'rREn?v ori inaim. 1,416,698, dated may 23, 1922, Serial No. 395,537, filed July 12, issue filed January 22, 1923. Serial No. 614,321). 7

'1 '0 all whom it may concern Be it known that I, Josnrrr C. DUNHA)I,. a Citizen of the United States, and resident of Oklahoma, Oklahoma County, Oklahoma,

I 5 haveinverited' certain new and useful Improvements injWeather Strips, of which the following is a specification.

. This. invention relates to weather strips ofthatgeneral character in which a resilient sheet metal stripis employed and adapted:

to be interposed between the edged the d'oor'and'the jamb and-adapted to be tensiolied b .the closing of the door.

The ject of the inventionv is to provide means to prevent passage of air between a doorv and jamb. Referring to the accompanying draw ngs,

in which:

Fig. 1 is an elevation View of a door and Like characters of reference designte' f like parts in all the figures.

The door and frame shown in this instance include the outer casing 10, the jamb- 11, the inner casing12, and the door 13; the jamb being rabbeted asat 14 to receive the door.

The improved" weather-strip '15,. hereinafter referred to as the strip, is of sheet metal, for example sheet brass of good In cross-section, that portion of the strip between the lines A-A and B-B (Fig. is shaped as an arc of a circle and adapted to have its edges bear against the edge 16 of the door 13; the round back surface of the strip resting against the jamb 11' in the.

rabbet 14.

- with a reproduction of a-portion of' with the door a little furing in the form of it issecured so 192 0. Application for re-' The remaining portion of the cross-sec- I tion of the strip between the lines BB and- C-C is also shaped as an arc ofv a circle, a portion 17 adapted to be fastened to the jamb 11 by nails 18.

The centers of curvature of. both the curved sections of the strip are both on the same side of the strip. It will be noted that one curve ends at one edge of a' peak 19, whilethe meeting ends of both curves also end in a common peak 20. I

By reference to the drawings it willlbe peaks 19 Sand 20- constitute observed that the longitudinal sealing corrugationsintermediparallelso that they can abut against one of the member's, usually the movable member, to e'flectually seal'the space member, for example,

between the movable v thedoor l3 and the jamb 11. Therefore, the metal Weatherstrip consists ofa concaveconxex strip in cross section,

edge for attachment .to a support and the other freely movable, the coneavo-c'onvex strip] having longitudinal sealing corrugation's, one of which is intermediate theside the other cor'ru ation'be-j edges of the strip,

aw'lip orcurve portion. The peaks or corrugations l9 and 20 constitute line conta'ctswith the member against which they abut, fectual seal;

having one thereby providing an ef- Since'the strip is fastened atone. endand is of inherent spring metal, it is obvious that the free end will tend to springoutv when pressure is not applied but that it will swing back or the line contacts will bear against one of the members to be sealed with enough force to prevent leakage. of air between the parts to be sealed.

In closing the door 13, the Strip 15, he1cl at its outer edge by the nails18, is-wholly or partially straightened out in cross section thereby placingsaid strip under tension and packing between the door forming it into a and jamb;

The improved strip maybe used between the meeting rails of-two sashes, or in any fulcrum on the part to whichthat it can be put under tension when functioning as a seal. Therefore,

i ate the side edges of thestrip and that the l corrugations are place Where the surfaces of two; relatively movable parts meet each other with a sliding contact or movement.

Spring brass eight-thousandths of an inch thick is found to be suitable for the strip.

The following is: claimed:

1.. A compound-curved sheet metal Weather strip formed in cross section into two arc shaped 'portions, the edges of one ot'which are adapted to bear against the edge of a door 'with the curved back of said portion bearing against the jamb in the rabbet thereof, 'the other portion beingprovided with an end portion for fastening to the jamb, the centers of curvatures of both areshaped portions being on the sarne side of p the strip and the peaks of both curves engageable with the edge of a door to be placed under tension at separated -points.

2. In a closure structure comprislng a Ira'me. and a movable. closure member, a resilient Weather strip normally disposed between the face of one of the jambs of said frame and the normally adjacentedge face of said. member, said strip-comprising a plurality of arcs struck from points on the same side of the strip, and terminating in ,a securing edge for attachment to one of said faces and in a lip at the opposite edge of said'strip, the adjacent portions of the respective arcs uniting to form a' pea-k separating said arcs, said strip, when said closure member is in closed relation to thejamb, being cramped betwen said faces with the peak and lipin weather-excluding engagement with one, and the rear portions of the arcs in-engagement with the other of said faces.

' In testimony whereof-I afiix my si I nature.

JOSEPH o. DUN AM. 

